Synonyms for Parasite:
n.arthropod, fungus, biped, amphibian, arachnid, adult, beast, bacteria, big game, animal, bear, beast of burden. dependent, lump, sycophant, couch potato, freeloader, slowpoke, slob, passenger, hanger-on, deadbeat, layabout, bum, goldbrick. dependence. •hanger-on (noun)
leech, sponger, sponge.
•something that exists by taking from or depending on another (noun)
freeloader, deadbeat, dependent, leech, sponge, sycophant, hanger-on.